Insulator-clamp.



W. G. CLARK.

INSULATOR CLAMP.

APPLICATION FILED NOV. 21, 1911;

Patented Oct. 8 1912.

2 SHEETS SHEBT l.

Mvmrw? WITNESSES I w. s. CLARK. INSULATOR CLAMP.

APPLICATION FILED NOV. 21, 1911.

1 1,040,620.. Patented 0015.8,1912.

2 SHEETSSHEET Z WITNESSES 4 5 elevation of the inside of one member with the bolts removed. Fig. 4 is aside elevation reins.

WALTER G. CLARK, 0]? NEW' :i'GB-K, To). Y.

insunaror ficnamr,

Specification of Lettersfiateat.

Patented @c t application filed ilovember 21, 1911. Serial No. 661E276.

To all whom it may concern:

Be'it known that I. lVAL'rna G. CLARK, a citizen. of the UnitedSta'tes, and a resident .of the borough of Manhattan, city, county,

and Stateof New York, have invented certainnew and useful Improvements in Insulator-Clamps, of which the following is a specification, accompanied by drawings. i

' This invention relates to insulatorclamps,

but more particularly to a clamp for holding in place angle or vertical conductors, as for instance, for holding street are lamp cables to standard or other suitable pole insulators or in a power houseforfastening-vertical bus bars in, place on a switch board, in which" latter case the clamps would preferably, although not necessarily, be used behind the switch board.

Many other uses will be found for a clamp adapted to hold angle'or vertical conductors,

and the objects of the'invention are to provide a neat, permanent and attractive clamp, simple and'cheap to manufacture, yet strong and eflicient, and especially designed for the purposes for which it is intended. The clamp is furthermore constructed to cooperate with a suitable insulator, as a standand insulator, and is provided with clampiinganenibers having body portions constructed'and adapted to embrace the insu ,lator and lie in theretaining groove on the insulator, so that the clamp is held firmly 1h position when the clamping members are tightened about theinsulator.

- To these ends the invention consists of a clamp embodying the features of construe I tion substantially as hereinafter described and. claimed in this specification and shown in its preferred embodiment in the accompanying drawings, in wh1ch- Figure l is a top plan View of an insulator clamp embodying the invention, with the parts assembled; Fig. 2' is a detail-sideel'evation of the outside of one member, with thebo'lts removedjFig. 3 is a detail side of the clamp applied to 'an insulator; and

'Fig. '5 is a side elevation of an insulator with one half of a clamp applied thereto illustrat- Referring to the drawings, the insulator clamp comprises a plurality of clamping members, preferably two members A and B,

parallel to the plane otthe longitudinal. 5.

axis of the insulator C. Such a construction is frequently necessary or desirable in contra-distinction to those cases in \v'l'iich it may be required to hold the conductor horizontally, or extending acrossthe to of the 1,"

insulator. p

Since the clamping members are substan tially" identical in construction and therefore interchangeable, which is an advau tageous feature, the description of one inember applies equally well to the other.

Each clamping member comprises a body member E bowed or curved as shown, and having a. securing member F in the form of a lug at one-end, and a jaw portion G at the otheii end provided with the jaw ll. The securing member F is providedwith an aperture J preferably angular or squared, to receive a securing bolt K having the head L, squared neck 0, and nut P, that the bolt may be inserted from either side of the securing members F when the clamping;-

members are assembled. The jaw portion G 1.; also provided with the preferably squaredaperture Q. preferably between the as body member and jaw to receive the bolt it having the head S, squared throat T and nut U. The body member E is preferably formed in the process of manufacture narrower and thinner than the securing men s ber F and jaw portion G, in order to save metal and decrease weight, without, however, sacrificing the desired strength of parts. By thus reducing the metal. oi the body member, the securing member and jaw 3 portion may be constructed wider and thicker than the body memberand thus atford provision for obtaining beveled shoi'zlders a, b and c, d at each end of the body member, which are so constructed and shaped as to cooperate with the groove i of the insulator C and afford bearing per tions for the clamp, thus taking'the, strain off the conductor l). The jaw portion is also preferably hollowed at W for lightness and strength. The relative width and thick ness of the body member and end portions the clamping members are more inci *l to the process of manufacture, than a requisite in the constructionof the clamp, because obviously the cooperation between the shouldered portions a, b and 0, (Z and the grooved portion of the insulator can be obncd if each clamping member were made of the same width and thickness throughout, because the bearing portions of the clamping members lie at the inner-surfaces of the securing membersv F and jaw portions G indicated by the reference characters a, b and 0, cl. These bearing portions furthermore are adapted to fulfill their functions of tale the strain off the conductor with conductors of diiferent diameters, because the surfaces a, b and 0, (Z will conform to the surface of the groove under substantially all conditions, provided the jaw portions are not too'widely separated by the insertion of a larger conductor than proper. Ordinarily clamps having difllerent sized jaws will be provided for conductors of different sizes.

In clamping a conductor or cable, a lead bushing X may beused in the jaws if desired, butt-his may be omitted, and the jaws are adapted to receive and hold a conductor of any suitable cross-section, as oval, circular, square, etc.

The insulator clamp constructed in accordance with this invention is simple and cheap to manufacture and afiords an eflicient means for holding in place angle or vertical conductors.

I claim and desire to obtain by Letters Patent the following:

An insulator clamp comprising two cooperating clamping members each having a bowed body member, a securing member at one end, and a jaw portion at the other end provided with an aperture intermediate the jaw and body member, the securing member and jaw portion being Wider than the connecting body member and having beveled shoulders at the junctions of the body member with said securing member and jaw portion.

In testimony whereof I have signed this pecification in the presence of two subscribing witnesses. I

WALTER G. CLARK.

Witnesses:

M. M. RIEMANN, HERBERT G. OGDEN. 

